Mabokosi a Ceramic a Alumina Osavala: Opangidwa kuti Ateteze Kuwonongeka Kwambiri

Mabokosi a alumina ceramic osagwira ntchitoAmapangidwa molondola kuchokera ku aluminiyamu oxide yoyera kwambiri (Al₂O₃ mulingo ≥ 92–99%) kudzera mu kukanikiza kouma ndi kutentha kwambiri pa 1,500–1,700°C. Njira yopangira yapamwambayi imapanga zinthu zadothi zokhala ndi kuuma kwapadera—zoyezera 9 pa sikelo ya Mohs ndi HRA 80–90 pa sikelo ya Rockwell, yachiwiri pambuyo pa diamondi. Ndi kuchuluka kwa voliyumu ya 3.60–3.85 g/cm³, mabuloko awa amalemera pafupifupi theka la chitsulo, zomwe zimachepetsa kwambiri katundu wa zida pomwe zimapereka chitetezo chabwino kwambiri pakuwonongeka. Zinthuzi zimayamwa madzi pang'ono kwambiri pansi pa 0.01%, kuonetsetsa kuti zikugwira ntchito bwino ngakhale m'malo okhala ndi chinyezi.

Kukana kwapamwamba kwa mabuloko a alumina ceramic kumatanthauza mwachindunji kukhala nthawi yayitali yogwiritsira ntchito zida komanso kuchepetsa ndalama zosamalira. Kuyesa kodziyimira pawokha kukuwonetsa kuti kukana kwawo kukalamba ndi pafupifupi nthawi 260-266 kuposa chitsulo cha manganese ndi nthawi 170-171.5 kuposa chitsulo chapamwamba cha chromium. Ndi mphamvu yokakamiza yofika ≥2,000 MPa ndi mphamvu yopindika ya 255-300 MPa, mabuloko awa amapirira katundu wolemera popanda kusweka. Kulimba kwawo kwa kusweka (KIC) kwa ≥4.8 MPa·m¹/² kumathandiziranso kulimba pansi pa mikhalidwe yovutikira ya cyclic. Makhalidwe abwino awa amapangitsa mabuloko a alumina ceramic kukhala yankho labwino kwambiri la lining pazinthu zogwiritsidwa ntchito kwambiri monga ma chutes, ma hopper, ma cyclone, ndi makina ogwiritsira ntchito zinthu.

Kuyambira migodi ndi kukonza mchere mpaka kupanga simenti, kupanga zitsulo, kupanga mphamvu yotentha, ndi kukonza mankhwala, mabuloko a alumina ceramic osatha kutha atsimikizira kufunika kwawo m'mafakitale ambiri komwe kusweka kwa zida ndikofunikira kwambiri. Mabuloko awa amapezeka mu Al₂O₃ purity grades a 92%, 95%, ndi 99%, amatha kusinthidwa kuti akwaniritse zofunikira zinazake zogwiritsidwa ntchito, ndipo kuyera kwambiri kumapangitsa kuti kukhale kolimba komanso kukana dzimbiri. Mwa kuphatikiza mabuloko a alumina ceramic m'malo ofunikira kwambiri, ogwiritsa ntchito mafakitale amatha kuchepetsa kwambiri nthawi yogwira ntchito yosakonzekera, kuchepetsa zinthu zosinthira, ndikuchepetsa mtengo wonse wa umwini pa nthawi yonse ya zida.